CN112943778A

CN112943778A - Convolution torque-increasing check bolt

Info

Publication number: CN112943778A
Application number: CN202110452938.7A
Authority: CN
Inventors: 贾利强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-06-11

Abstract

The invention discloses a convolute torque-increasing anti-loosening bolt, which relates to the field of bolt anti-loosening devices and comprises a bolt rod, a nut and a gasket, wherein the nut is sleeved on the outer side wall of the bolt rod in a threaded manner, the gasket is sleeved on the outer side wall of the bolt rod and positioned at the bottom of the nut, and the outer side wall of the bolt rod is sleeved with a bolt gasket. The invention provides a convolution torque-increasing anti-loosening bolt, which is characterized in that a nut on a bolt rod is screwed up, so that a metal block a on the nut is contacted with the top of a splicing block b on a gasket, the metal block b on the nut is contacted with the top of the splicing block a on the gasket, the nut is not screwed up by a thread pair but by the bolt and the bolt gasket, the height difference between the nut and the nut gasket achieves the functions of screwing up and loosening prevention, the stability is superior to that of the existing anti-loosening connecting structure, the later maintenance cost is low, and the manufacturing cost is low. Meanwhile, the locking device is suitable for locking of the bolt, the nut and the combination of the bolt and the nut.

Description

Convolution torque-increasing check bolt

Technical Field

The invention relates to the field of bolt anti-loosening devices, in particular to a convolution torque-increasing anti-loosening bolt.

Background

The screw is the main tie of all hardware connections at present, especially in the automobile manufacturing trade, and the connection of many parts on the car is mainly through the bolt connection. Because the automobile can produce the vibration at the in-process of traveling, the vibration can lead to the bolt to appear becoming flexible to there is certain potential safety hazard, consequently, a lot of check bolts have appeared on the market, and the locking mode of screw fastening at present has four kinds, and friction is locking, and machinery is locking, rivets to dash locking and structure locking.

The prior Japanese hatdelake locknut relies on the main friction force to prevent looseness, but has the defects of high manufacturing cost and large limitation, and is only suitable for looseness prevention of the nut.

The Chinese Thangshi bolt is anti-loose by means of a positive and negative double-thread structure of the bolt pair, but has the defects of high manufacturing cost and low bolt strength.

The nut is convenient to disassemble by adopting a mechanical anti-loosening mode such as an elastic washer, a double nut, a self-locking nut, a nylon insert locking nut and the like. However, under the conditions of impact, vibration and variable load, the pretightening force of the bolt is reduced due to the looseness at the beginning, and the lost pretightening force is slowly increased along with the increase of the vibration times, so that the nut is loosened, and the threaded connection fails. Mechanical anti-loosening is the use of a stop to directly limit the relative rotation of the thread pairs. Such as cotter pins, tandem wires, and stop washers, etc. The stop piece has no pretightening force, so that the anti-loosening stop piece can only act when the nut is loosened to the stop position. Therefore, this method cannot practically prevent loosening but prevents falling.

The riveting and punching anti-loosening are realized by adopting methods of punching, welding, bonding and the like after screwing. The screw pair loses the motion characteristic and is connected into a non-detachable connection. The thread pair must be broken to be detachable.

The anti-loosening structure is realized by utilizing the self structure of the thread pair, namely a Down's thread anti-loosening mode. The anti-loosening mode of the Tang screw thread only depends on self structure to prevent loosening. The anti-loosening structure has the advantages of complex process, high production cost and low structural strength of the thread pair.

Therefore, a rotary torque-increasing anti-loosening bolt is provided to solve the problem.

Disclosure of Invention

The invention provides a convolution torque-increasing anti-loosening bolt, which solves the technical problems in the background technology.

In order to solve the technical problems, the invention provides a convolution torque-increasing anti-loosening bolt, which comprises a bolt rod, a nut and a gasket, wherein the nut is sleeved on the outer side wall of the bolt rod in a threaded manner, the gasket is sleeved on the outer side wall of the bolt rod and positioned at the bottom of the nut, the outer side wall of the bolt rod is sleeved with the bolt gasket, the top of the bolt gasket is in contact with the bottom of the gasket, and the convolution torque-increasing anti-loosening bolt comprises:

the nut comprises two metal blocks a, two metal blocks b and two metal blocks c, the two metal blocks a, the two metal blocks b and the two metal blocks c are arranged in a surrounding mode by taking the circle center of the bolt rod as the circle center, the thickness of the metal block a is larger than that of the metal block b and that of the metal block c, the thickness of the metal block b is larger than that of the metal block c, and slopes are arranged at the connecting positions of the metal block b, the metal blocks a and the metal blocks c;

the gasket comprises two splicing blocks a, two splicing blocks b and two splicing blocks c, wherein the two splicing blocks a, the two splicing blocks b and the two splicing blocks c are arranged in a surrounding mode by taking the circle center of a bolt rod as the circle center, the thickness of the splicing block a is larger than that of the splicing block b and that of the splicing block c, the thickness of the splicing block b is larger than that of the splicing block c, and the gradient is arranged at the joint of the splicing block b and the splicing block a and at the joint of the splicing block c.

Preferably, the function of the slope is to facilitate the nut to be screwed down and superposed on the top of the gasket, thereby realizing the function of anti-loosening.

Preferably, the metal block a, the metal block b and the metal block c are integrally arranged, and the metal block a, the metal block b and the metal block c are sequentially arranged in a counterclockwise direction.

Preferably, the two metal blocks a are symmetrically arranged by taking a bolt rod as a center;

the two metal blocks b are symmetrically arranged by taking a bolt rod as a center;

the two metal blocks c are symmetrically arranged by taking the bolt rod as a center.

Preferably, the splicing block a, the splicing block b and the splicing block c are integrally arranged, and the splicing block a, the splicing block b and the splicing block c are sequentially arranged in a clockwise direction.

Preferably, the two splicing blocks a are symmetrically arranged by taking a bolt rod as a center;

the two splicing blocks b are symmetrically arranged by taking a bolt rod as a center;

the two splicing blocks c are symmetrically arranged by taking the bolt rod as a center.

Preferably, the top of nut and the bottom of gasket all are provided with the pawl, the pawl sets up with nut and gasket respectively integratively.

Compared with the prior art, the convolution torque-increasing anti-loose bolt provided by the invention has the following beneficial effects:

the invention provides a convolution torque-increasing anti-loosening bolt, which is characterized in that a nut on a bolt rod is screwed up, so that a metal block a on the nut is contacted with the top of a splicing block b on a gasket, the metal block b on the nut is contacted with the top of the splicing block a on the gasket, the nut is not screwed up by a thread pair but by the bolt and the bolt gasket, the height difference between the nut and the nut gasket achieves the functions of screwing up and loosening prevention, the stability is superior to that of the existing anti-loosening connecting structure, the later maintenance cost is low, and the manufacturing cost is low. Meanwhile, the locking device is suitable for locking of the bolt, the nut and the combination of the bolt and the nut.

Drawings

FIG. 1 is a schematic structural view of a convolute torque-increasing anti-loosening bolt;

FIG. 2 is a schematic structural view of a nut in a convolution torque-increasing anti-loose bolt;

FIG. 3 is a schematic structural view of a nut and inverted teeth in a convoluted torque-increasing anti-loose bolt;

FIG. 4 is a schematic structural view of a washer in a convolution torque-increasing anti-loose bolt;

fig. 5 is a schematic structural view of a spacer and a pawl in a convolution torque-increasing anti-loose bolt.

Reference numbers in the figures: 1. a bolt shank; 2. a nut; 21. a metal block a; 22. a metal block b; 23. a metal block c; 3. a gasket; 31. a block a; 32. splicing blocks b; 33. splicing blocks c; 4. a bolt washer; 5. and (6) chamfering.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In a first embodiment, as shown in fig. 1 to 5, a back-turning torque-increasing anti-loosening bolt includes a bolt bar 1, a nut 2, and a gasket 3, wherein the nut 2 is sleeved on the outer side wall of the bolt bar 1, the gasket 3 is sleeved on the outer side wall of the bolt bar 1, and the gasket 3 is located at the bottom of the nut 2, the outer side wall of the bolt bar 1 is sleeved with a bolt gasket 4, the top of the bolt gasket 4 is in contact with the bottom of the gasket 3, wherein:

the nut 2 comprises two metal blocks a21, two metal blocks b22 and two metal blocks c23, wherein the two metal blocks a21, the two metal blocks b22 and the two metal blocks c23 are arranged in a surrounding mode by taking the circle center of the bolt rod 1 as the circle center, the thickness of the metal block a21 is larger than that of the metal block b22 and that of the metal block c23, the thickness of the metal block b22 is larger than that of the metal block c23, and slopes are arranged at the connecting positions of the metal block b22, the metal block a21 and the metal block c 23;

the gasket 3 comprises two splicing blocks a31, two splicing blocks b32 and two splicing blocks c33, wherein the two splicing blocks a31, the two splicing blocks b32 and the two splicing blocks c33 are arranged in a surrounding mode by taking the circle center of the bolt rod 1 as the circle center, the thickness of the splicing block a31 is larger than that of the splicing block b32 and that of the splicing block c33, the thickness of the splicing block b32 is larger than that of the splicing block c33, and slopes are arranged at the joints of the splicing block b32 and the splicing blocks a31 and c 33.

The metal block a21, the metal block b22 and the metal block c23 are integrally provided, and the metal block a21, the metal block b22 and the metal block c23 are sequentially arranged in a counterclockwise direction.

The metal block a21, the metal block b22 and the metal block c23 all belong to the nut 2, and during machining, the thicknesses of the metal block b22 and the metal block c23 are cut off, so that the upper surface of the nut 2 is a horizontal plane, and the lower surface of the nut 2 is trapezoidal.

The two metal blocks a21 are symmetrically arranged by taking the bolt rod 1 as a center;

the two metal blocks b22 are symmetrically arranged by taking the bolt rod 1 as a center;

the two metal blocks c23 are symmetrically arranged with the bolt shank 1 as the center.

The splice a31, the splice b32 and the splice c33 are integrally arranged, and the splice a31, the splice b32 and the splice c33 are sequentially arranged in a clockwise direction.

Splice a31, splice b32 and splice c33 all belong to gasket 3, add man-hour, excise splice b32 and splice c 33's thickness for the lower surface of gasket 3 is the horizontal plane, and the upper surface then is trapezoidal setting.

The two splicing blocks a31 are symmetrically arranged by taking the bolt rod 1 as a center;

the two splicing blocks b32 are symmetrically arranged by taking the bolt rod 1 as a center;

the two pieces c33 are symmetrically arranged around the bolt shaft 1.

The top of nut 2 and the bottom of gasket 3 all are provided with pawl 5, and pawl 5 sets up with nut 2 and gasket 3 an organic whole respectively.

The function of pawl 5 is to prevent nut 2 from becoming flexible at the top of gasket 3, plays locking function.

The working principle is as follows:

this patent is screwed up the pretightning force through bolt and nut 2. The pre-tightening force of the bolt and the nut 2 is the early-stage torque adjustment for adjusting the distance between the bolt and the nut 2 and the final torque required for the rotation torque increase. The height difference of the rotary angle between the bolt rod 1 and the nut 2 is larger than the height difference of the rotary angle between the threads. The bolt rod 1 is directly tensioned by utilizing the height difference between the nut 2 and the gasket 3. The shoulder height of the second step after lifting prevents the nut 2 on the bolt bar 1 from circling loose. Meanwhile, the width of the rotation angle of the first step is utilized, so that the nut 2 on the bolt rod 1 cannot rotate towards the bolt fastening direction. The anti-loosening function of the bolt is realized.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a backspin increases turns round check bolt which characterized in that: including shank of bolt (1), nut (2) and gasket (3), nut (2) screw thread cup joints on the lateral wall of shank of bolt (1), gasket (3) cover is established on the lateral wall of shank of bolt (1), just gasket (3) are located the bottom of nut (2), bolt gasket (4) have been cup jointed to the lateral wall of shank of bolt (1), the top of bolt gasket (4) contacts with the bottom of gasket (3), wherein:

the nut (2) comprises two metal blocks a (21), two metal blocks b (22) and two metal blocks c (23), the two metal blocks a (21), the two metal blocks b (22) and the two metal blocks c (23) are arranged in a surrounding mode by taking the circle center of the bolt rod (1) as the circle center, the thickness of the metal block a (21) is larger than that of the metal block b (22) and that of the metal block c (23), the thickness of the metal block b (22) is larger than that of the metal block c (23), and slopes are arranged at the connection positions of the metal block b (22), the metal block a (21) and the metal block c (23);

the gasket (3) comprises two splicing blocks a (31), two splicing blocks b (32) and two splicing blocks c (33), the splicing blocks a (31), the splicing blocks b (32) and the splicing blocks c (33) are arranged in a surrounding mode by taking the circle center of the bolt rod (1) as the circle center, the thickness of the splicing block a (31) is larger than that of the splicing block b (32) and that of the splicing block c (33), the thickness of the splicing block b (32) is larger than that of the splicing block c (33), and slopes are arranged at the joints of the splicing block b (32) and the splicing blocks a (31) and c (33).

2. The bolt of claim 1, wherein the metal block a (21), the metal block b (22) and the metal block c (23) are integrally arranged, and the metal block a (21), the metal block b (22) and the metal block c (23) are sequentially arranged in a counterclockwise direction.

3. The bolt of claim 1, wherein the two metal blocks a (21) are arranged symmetrically around the bolt shank (1);

the two metal blocks b (22) are symmetrically arranged by taking the bolt rod (1) as a center;

the two metal blocks c (23) are symmetrically arranged by taking the bolt rod (1) as a center.

4. The rotary torque-increasing anti-loosening bolt according to claim 1, wherein the block a (31), the block b (32) and the block c (33) are integrally arranged, and the block a (31), the block b (32) and the block c (33) are sequentially arranged in a clockwise direction.

5. The backspin anti-loosening bolt according to claim 1, wherein the two pieces a (31) are symmetrically arranged with the bolt shank (1) as the center;

the two splicing blocks b (32) are symmetrically arranged by taking the bolt rod (1) as a center;

the two splicing blocks c (33) are symmetrically arranged by taking the bolt rod (1) as a center.

6. The backspin anti-loose bolt according to claim 1, wherein the top of the nut (2) and the bottom of the washer (3) are provided with inverted teeth (5), and the inverted teeth (5) are respectively integrated with the nut (2) and the washer (3).